package dao;

import po.CourseStudent;

import java.util.List;

public interface CourseStudentDao {
    public List<CourseStudent> queryAll(Integer sid);
    public  boolean insert(CourseStudent courseStudent);
    public  boolean delete(CourseStudent courseStudent);
    public  Integer  haveChooseNumber(Integer id);
    public boolean ifHaveChoose(Integer cid,Integer sid);
    public  CourseStudent queryOneCourseStudent(Integer cid,Integer sid);
}
